Ok thank you Matthew.

But i didn't think it would help to change the gicleur in the flowmeter. Is it for temperature management or pressure build up?

Luc, your correct, the smaller flowmeter jet just makes the pressure softer at the beginning of the shot, and reduces channeling.

I've checked on-line and off-line resources for Aurelia optional restrictors, and couldn't find any in W. Europe. If someone knows where I can order those little pieces of brass i'd be glad.

By the way, it was set to 0.8-0.9 bar when i received it. No Flash Boiling and decent extractions (I still have to improve my skill on it), but wet steam.

Javacat wrote:the restrictors you need are a .5 for the flow meter and a 1.75 in the group

The 1.75 to be replaced, is it the one entering or leaving the group?

Also, could someone please educate me as to what "flash boiling" is.

Troy

It's the one entering the group.

Concerning flash boiling, it might be my faulty english but it relates to what happens with the HX.
See this topic.